WebAssembly Unleashed
F5
Welcome to WebAssembly Unleashed, your monthly dive into the dynamic world of WebAssembly (Wasm). Join F5’s Joel Moses, Oscar Spencer, and Wasm enthusiast Matthew Yacobucci as they unpack the potential, challenges, and innovations within the Wasm ecosystem.
Designed for architects, practitioners, technologists, and Wasm enthusiasts, episodes offer:
Insightful discussions on Wasm advancements.
Practical tips for seamless integration into projects.
Interviews with influential figures shaping the Wasm landscape.
Strategies for maximizing the potential of WebAssembly.
Subscribe now and stay abreast of the latest in Wasm development. Whether you’re a seasoned pro or new to the field, WebAssembly Unleashed is your ticket to unlocking the full power of this revolutionary technology. Tune in for a deep dive into the limitless possibilities of WebAssembly.
Designed for architects, practitioners, technologists, and Wasm enthusiasts, episodes offer:
Insightful discussions on Wasm advancements.
Practical tips for seamless integration into projects.
Interviews with influential figures shaping the Wasm landscape.
Strategies for maximizing the potential of WebAssembly.
Subscribe now and stay abreast of the latest in Wasm development. Whether you’re a seasoned pro or new to the field, WebAssembly Unleashed is your ticket to unlocking the full power of this revolutionary technology. Tune in for a deep dive into the limitless possibilities of WebAssembly.
Episodes
Mentioned books
Dec 11, 2025 • 22min
Exploring Wassette, Microsoft's Wasm tool for AI agents | WebAssembly Unleashed
Yosh Wuyts, a Senior Developer Advocate at Microsoft and a contributor to the WebAssembly ecosystem, delves into Wassette, a groundbreaking tool for AI agents. He explains its innovative sandboxing capabilities, enhancing security while running code. The discussion covers Wasette's architecture using Wasmtime, its component model allowing fine-grained permissions, and its integration with multiple programming languages like Rust and Python. Yosh also contrasts Wassette’s safety against risky native downloads, showcasing its potential to transform development processes.
Nov 12, 2025 • 33min
Wasm Proposal Hot Takes Part 2 | WebAssembly Unleashed
Hosts and their special guest dive into the latest WebAssembly proposals, exploring ESM integration for easy JavaScript imports. They discuss the benefits of wide arithmetic operations for improved performance and cryptography. The nuances between phase two and phase three proposals are dissected, alongside a look at relaxed dead code validation. The team debates custom page sizes for efficiency in embedded systems and the significance of stack switching for coroutines. Insights into the component model's status and challenges in observability complete this engaging discussion.
Sep 16, 2025 • 33min
Wasm Hot Takes: Explore Controversial Proposals & Bold New Features | WebAssembly Unleashed
Dive into the heated discussions around WebAssembly's latest proposals! The hosts and guest explore the potential of tail calls and the challenges of implementation. They tackle the complexities of garbage collection, multiple memories, and the excitement of relaxed SIMD. Concerns about JavaScript integrations and the implications for ecosystem fragmentation are also front and center. Plus, insights into the future of threading and async integration reveal both promise and pitfalls. If you love tech debates, this one's for you!
Aug 15, 2025 • 26min
Interns Gone Wasm: WebAssembly Research & Innovation | WebAssembly Unleashed
Join hosts Joel Moses and Oscar Spencer as they dig into recent developments in the world of WebAssembly, starting with a look at Microsoft's Wassette, an initiative utilizing Wasm to enhance AI agent security. Then hear from special guests Khagan (Khan) Karimov and Arjun Ramesh, two doctoral candidates passionate about innovative WebAssembly research. Hear about Khan's focus on fuzzing Wasm implementations to root out security vulnerabilities, while Arjun explores time travel debugging to revolutionize debugging in embedded systems. Tune in for an insightful episode that highlights the exciting developments in the WebAssembly space!For more from F5's Office of the CTO visit the following sites: Blogs - https://www.f5.com/company/octoReports - https://www.f5.com/services/resources/reports
Jul 16, 2025 • 31min
Exploring JavaScript Ahead-of-time Compilation with Porffor | WebAssembly Unleashed
Oliver Medhurst, a former Mozilla engineer, discusses his innovative project, Porffor, which compiles JavaScript ahead-of-time to WebAssembly and native binaries. He highlights the complexities of static compilation in JavaScript and the benefits of AOT, such as smaller binaries and faster startup times. Oliver shares insights on type inference, performance improvements over interpreters, and the importance of community feedback in refining Porffor. He also delves into garbage collection strategies and offers advice to aspiring AOT compiler builders.
Jun 10, 2025 • 32min
Unlocking the Secrets of Formal Verification in WebAssembly | WebAssembly Unleashed
Join hosts Joel Moses, Oscar Spencer, and Matt Yacobucci as they dive deep into the world of formal verification with special guest Chris Fallin. In this episode of WebAssembly Unleashed, the team discusses the importance of formal verification in software development, particularly for WebAssembly. Chris, a co-author of the Cranelift compiler and Mozilla alum, explains the concept of formal verification, its significance, and how it can be applied to ensure software correctness and security. The conversation covers a range of topics including type safety, the use of SMT solvers, the challenges in formally verifying compilers, and the potential role of AI in generating formally verified code. Don't miss this insightful discussion if you're keen to learn about cutting-edge techniques to make software more reliable and secure.
6 snips
May 12, 2025 • 43min
WebAssembly SpecTec | WebAssembly Unleashed
Andreas Rossberg, a programming languages researcher and co-designer of the WebAssembly specification, joins the conversation to share his journey from V8 to WebAssembly. He introduces SpecTec, a unique language designed to unify and streamline the WebAssembly specification. The discussion reveals how SpecTec addresses duplication issues and enhances compiler construction. Andreas also touches on the unexpected adoption of WebAssembly in embedded systems and emphasizes the need for improved tooling and runtimes in the community.
Apr 10, 2025 • 42min
The Future of WebAssembly Garbage Collection | WebAssembly Unleashed
Join Joel Moses, Oscar Spencer, and Matt Yacobucci as they discuss the latest news and recent developments in WebAssembly, such as Zig 0.140 and projects like running Linux inside a PDF file. This episode features special guest Nick Fitzgerald, a notable contributor to WasmTime and CraneLift, who explains the concept of garbage collection in programming. The discussion covers garbage collection in the context of WebAssembly, diving into algorithms, their implications, and challenges in implementation. They also touch upon the future of WebAssembly in embedded systems and the broader applications of these technologies in various programming languages like Java and Python. Don't miss this engaging and informative episode! A Unified Theory of Garbage Collection paper: https://courses.cs.washington.edu/courses/cse590p/05au/p50-bacon.pdf
Mar 14, 2025 • 38min
The Analyst's View of Wasm | WebAssembly Unleashed
Join hosts Joel Moses, Oscar Spencer, and Matthew Yacobucci as they discuss recent WebAssembly advancements, such as data science in browsers with WebR, LibreOffice now running as ZetaOffice, and a unique case study from Dagger.IO on replacing a React front end with Go and WebAssembly. The team is joined by special guest, journalist and analyst Bruce Gain, who shares his insights on the impact of WebAssembly in gaming and its applications in various industries. Topics include performance benchmarking, the evolution of WebAssembly, and its potential tipping points for mainstream media attention. Tune in for an engaging conversation about the future of WebAssembly and its broader implications.
10 snips
Feb 13, 2025 • 31min
State of WebAssembly 2025 | WebAssembly Unleashed
Hosts dive into the advancements of WebAssembly in 2024, highlighting breakthroughs in core technology like GC and Memory64. They discuss the significance of these updates beyond the browser and the rise of the WASI ecosystem. Expect predictions for 2025, including server-side implementations for AI and security. There's also a focus on cross-language composition and enterprise adoption trends, featuring big names like American Express. The future looks promising with imminent updates and potential rebranding on the horizon!
